Computer all Generation 

Q. What is a Computer ?

ans. Computer is a electronic machine /device ..

        input - processing - output - storage - user

Q. Part's of computer?

ans. input            -    Mouse , keyboard , joystick , Scanner Gun etc. 

        processing    - ALU , CU

        output          - Moniter , Printer etc.

        storage        - Harddisk , pen - drive , CD,DVD

        user -        ---------------